21065786

素因数分解:

$2^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{4999}}^1$

素因数の和:5058

約数の個数: 24

約数和(自身を含む): 37620000

約数和(自身を除く): 16554214

約数列:

[1, 2, 7, 14, 43, 49, 86, 98, 301, 602, 2107, 4214, 4999, 9998, 34993, 69986, 214957, 244951, 429914, 489902, 1504699, 3009398, 10532893, 21065786]

約数ペア:

[(1, 21065786), (2, 10532893), (7, 3009398), (14, 1504699), (43, 489902), (49, 429914), (86, 244951), (98, 214957), (301, 69986), (602, 34993), (2107, 9998), (4214, 4999)]